Gear-lock for automobiles



C. G. TROSIEN.

GEAR LOOK FOR AUTOMOBILES.

APPLICATION FiLED NOV: I9I9.

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@mma Jan. 13,19%

' the lower end of the CHARLES G. TROSIEN, OF PQNTIAC, MECHIGAN. l

GEAR-LOCK FOR AUTOMOBILES.

Specification of Letters Patent.

Patented Jan; 18, 1921.

Application filed November 7, 1919. Serial No. 336.406.

To all 'wlw/mf? may conce/'a Be it known` that I, CHAnLEs (i. TnosinN, acitizen of the United States, residingr at Pontiac, county of Oakland,state of Michigan, have invented a certain new and usct'ul Improvementin Gear-Locks for Aintomobiles, and declare the following to he a 'ullclear, and exact description ot' the same, such as will enable othersskilled in the art to which it pertains to make and use the same,reference being had to the `accompanying drawingjfs7 which form a partof this specification.

My invention relates to gear locks tor automobiles and an object of myimprovements is to provide an improved means of locking a rotating shaftwhich actuates the speed changing apparatus. I have shown a constructionembodying my invention as applied to the 'change speed gearing ot' aFord automobile.

Figure l is a detail section ot' a part of the change speed gear casingwith an apparatus embodying my invention secured thereto.

Fig. 2 is a sectional View looking from the right ot Fig. l. the sectionbeing taken approximately on the line U--H ot' Fig.. l.

Fig. 3 is a perspective view of the lockingl cam.

Fig. 5 is a detail section on the line a perspective view ot the lowervend ot' the casinh c.

Fig. (3 is an inverted plan view showing locking rod d.,

Fig. 7 is av view similar to Fig. 2 showing a modified construction.

a isa change speed gear casing. u! is a cover plate therefor. is a rockshatt. .arrying the lever arm hy which the change, speed gear apparatusis actuated. c is a cylindrical casing slotted. as shown at c", Fig. 5,at. its lower end and provided coaxial apertures c" through which therock shaft. f7 engages and in which it may turn.

f/ is a rotating rod tilting in the casing c. c2 is a pin lock apparatush v which the rod f/ maylie sccurcd ,l'rom rotation at itsl locked'position. r/i are. two lugs formed on the lower end ot'. the rod h'vmilling'out the intervening portion of said rod. d2 indicate cut-awayportions on opposite sides ot' the rod d.

o3 indicate apertures opposite xach other through the wall of the casingc and opposite the milled slots Z2 in the rod fl when casing c and thewith said rod is turned to its unlocked position. c c are pins fittingand adapted to reciprocate in the apertures c3.

When the. rod d is turned to its unlocked position as shown in Fig. 1,'the pins e, @may he completely within the apertures 03 and cover plateo2 may he tal en otl' the casing a. When the rod I is turrled to itslocked position the pin. d are protruded from the apertures o3 and estnd over the cover plate. (/L as shown by defied lines in Fig. l, thuspreventing the rem val ot' said plate. l

f' is a locking disk secured upon the rock sha t'tas hy a pin f2. rThedisk f itsin the slot f. at the lower endl ot' the cylindrical casing c.The outer periphery ot' the disk;c is inilledto Vtorni a circularcentral lug f* protruding radiall \v therefrom and two lugs f", f spacedfrom the lug?r f". When the rod r/ is turned to the position shown inFig. l, the lugs f3. 7'" are'free to pass between the lugs di". ll'henthe rod (Z is turned about. its axistlo degrees the lugs d3 engage uponhoth sides ot' the lug f", their-outer surfaces engaging against theinner lugs 7'. in this position the locking disk and consequently therock shaft d is rigidly secured. prcferahly in neutral position ot thechange speed gear apparatus, and the gearing is locked.

lnstead ot' the lugs f3, there aperture Vformed in the periphery of thelug f'. as shown at f". Fig. 7, and there may hc a reciprocatingl rod ulhaving its lower end di formed to engage in the cavity il", serving tolock thelocling disk' f in the engaged position of the gea-ring. i

livv this construction, the casing c is rig idlv secured from removalfrom the easing` h v the roc` (l engaging` through the oper-- ture c4.

in the unlocked position of the gearing, the cover plate' a? may heremoved and in the locked position ot' the gearing such cover plate. issecured from removal.

Claims:

l.. 'l`he comhination of a change speed gear casing. a roi-'k shaft'.ytherein. a lock casing extending through the change speed gear casingand engaging said shaft so as to prevent the removal of said casing andlocking apparatus in said lock casing adapted to engage lsaid shaft andprevent its turning.

2. 'lhe combination ot' a change speed may he an.

surfaces of the llO gear casing, a lock casing extending through theWall of the change 'speed gear casing, said lock casing being slotted atits lower end and engaging over said shaft so as to prevent the removalof said Casing, a locking disk on said shaft, fitting in the slot insaid casing, a locking means in said lock casing, adapted to engagesaiddisk and prevent the turning of said shaft.

3. The combination of a change speed gear casing, a removable coverplate therefor, a shaft in said casing, a look casing passing throughsaid cover plate and engaging said shaft, a rod in said lock casingadapted to engage said shaft, apertures through the Wall of said lockcasing about said cover plate, pins in said apertures adapted toreciprocate therein and when protruding from said slot to engage saidcover plate, said looking means being constructed to cause said pins toprotrude when in its looked position and permitting the pins to be drawnfrom said apertures When in its unlocked position.

4C. The combination of a change speed gear casing, a gear actuatingshaft in said casing, a look Casing protruding through the wall of saidchange speed gear casing, and engaging said shaft, a cam upon said shaftprovided with a lug at its periphery, a rotating rod in said lookcasing, adapted to engage said lug in one angular position7 and to leavethe lug free at another angular position. 4

In testimony whereof I sign this specification.

CHARLES G. TROSHCN.

